diff --git a/src/OpenTK/Platform/MacOS/Cocoa/NSFloat.cs b/src/OpenTK/Platform/MacOS/Cocoa/NSFloat.cs
index 899ecc32..39b55d36 100644
--- a/src/OpenTK/Platform/MacOS/Cocoa/NSFloat.cs
+++ b/src/OpenTK/Platform/MacOS/Cocoa/NSFloat.cs
@@ -118,7 +118,7 @@ namespace OpenTK.Platform.MacOS
                 }
                 else
                 {
-                    return *(float*)&f.value;
+                    return *(double*)&f.value;
                 }
             }
         }